Finding in-network care often depends on healthcare provider directories. Yet many patients discover that the information they rely on does not reflect real availability. Doctors listed as in-network may not be accepting new patients, may no longer practice at the listed location, or may have inaccurate information, making it difficult to book.
This disconnect is commonly referred to as a ghost network. Ghost networks lead to confusion, delays in care, and unexpected out-of-network costs when care directories fail to deliver on their promise of helping patients access in-network providers.
Zocdoc addresses this problem by focusing on real, bookable access. Rather than publishing static insurance provider directories, Zocdoc works to reduce the impact of ghost networks through provider verification, ongoing validation, and insurance corrections.
What is a ghost network?
A ghost network is a healthcare directory that lists providers who are not actually available to patients. These listings may include doctors who are not accepting new patients, are no longer practicing at the listed location, or appear in-network but are actually out-of-network.
For patients, ghost networks often result in repeated outreach, difficulty securing appointments, delays in care, and unexpected out-of-network costs when access does not match what directories promise.
What causes ghost networks in healthcare?
Ghost networks exist because provider information changes frequently, while many directories are not built to reflect those changes in real time. Common causes include:
- Delayed updates: Many directories rely on manual or infrequent submissions from practices.
- Provider churn: Doctors frequently change locations and/or insurance networks.
- Limited validation: Availability and real-world access are often not rechecked after a listing goes live.
As a result, patients are often the ones who uncover inaccuracies only after trying to book care.
Why ghost networks are common across healthcare provider directories
Ghost networks are not unique to any single platform. Independent investigations and regulatory audits consistently show that inaccurate provider directories are widespread across the U.S. healthcare system, largely because provider data changes frequently and is difficult to keep updated in real time.
External findings include:
- Centers for Medicare & Medicaid Services (CMS) audits of Medicare Advantage directories repeatedly found that 45–52% of provider listings contained at least one inaccuracy, such as wrong location, incorrect phone number, or false “accepting new patients” status.
- A U.S. Senate Finance Committee secret shopper study found that patients could successfully book mental health appointments only 18% of the time, with many listings unreachable or inaccurate.
- State investigations, including by the New York Attorney General, found that large majorities of mental health providers listed as in-network were unavailable or not actually participating.
- GAO and Commonwealth Fund analyses show that provider churn, fragmented data systems, and limited verification allow directories to appear broader on paper than they are in reality.
These issues span Medicare Advantage, ACA marketplace plans, Medicaid managed care, and commercial insurance networks.
How does Zocdoc reduce ghost networks in practice?
Zocdoc reduces ghost networks by verifying providers before they appear on the platform, continuously validating listing accuracy, and removing or correcting information when it cannot be confirmed.
Provider verification before listings go live
Zocdoc is not an insurer and does not publish insurance plan directories. Instead, it focuses on showing active, verified, bookable providers.
Before a provider appears on Zocdoc, the platform verifies:
- Provider identity and correct NPI matching
- Active state licensure and required credentials
- Sanctions or exclusion checks
- Confirmation that the provider is actively practicing and prepared to see patients
Only verified providers can go live and accept bookings.
Ongoing validation to keep provider listings accurate
Zocdoc does not approve listings once and leave them unchanged. Accuracy is maintained through ongoing validation, including:
- Regular prompts for practices to confirm provider rosters, locations, insurance plans, and availability
- Monitoring for inactive or stale signals, such as empty calendars or outdated office details
- Account-verification campaigns when repeated issues appear
If information cannot be confirmed, listings may be paused from receiving new bookings.
When providers are removed from Zocdoc search results
Zocdoc deactivates providers when inaccuracies are confirmed, including:
- Expired or suspended licenses
- Closed or relocated practices
- Verified reports that a provider does not work at the listed location
- Repeated evidence that a provider is not accepting Zocdoc patients despite appearing bookable
How insurance directory inaccuracies are corrected
Zocdoc works to reduce inaccuracies by combining multiple inputs, including:
- Practice and staff attestations
- Updates submitted through the provider portal
- EHR and practice-management integrations
- External payor data, including Transparency in Coverage files
- Patterns from patient and practice feedback
When repeated reports show a plan is incorrect, Zocdoc reviews and removes or corrects the mapping rather than leaving it visible.
What Zocdoc does not do with provider directories
To be clear:
- Zocdoc does not cap the number of providers shown per insurance plan
- Provider-plan combinations remain visible only when there is sufficient evidence they are accurate
Bottom line
Ghost networks are a well-documented problem across healthcare directories. Zocdoc reduces their impact by verifying providers, continuously validating listings, and correcting insurance mismatches so patients see real, available options they can actually book.